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Lera25 [3.4K]
2 years ago
6

11. Which is a solution of b +7 >-2 A. b <-9 B. b> -9 C. b>-9

Mathematics
1 answer:
kap26 [50]2 years ago
8 0

Answer:

C. b>-9

Step-by-step explanation:

subtract 7 from both sides.

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8z-13=7 what's the number that replaces z
Goshia [24]
All you do is solve for z. So 8z-13=7. To solve for a variable you have to do the opposite to cancel out the numbers on each side. First you add 13 over to 7 to cancel out 13 on the z side. So 8z=20 is what you have left. Then you divide 8 on both sides to cancel out 8 on the z side. what you are left with is z=2.5. Lastly you plug and check. 8(2.5) - 13 = 7, 20-13=7. And thats correct so z is 2.5.
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Ratio 90kg to 2 : 3 : 7
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Step-by-step explanation:

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N Over 33 = 4 Over 11
raketka [301]

Answer:

d. n = 12

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3 years ago
Your having lunch at Taco Bell. You have your choice of a taco,burrito or Mexican pizza. You can choose between rice and beans.
tino4ka555 [31]

Let T be the taco, B the burrito, MP the mexican pizza, R the rice, and N the beans.

For the main course we can have the first three.

----- T

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-----T---------R or N.

We expand it to

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And we repeat it for the rest.


Thus, the tree diagram is

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5 0
3 years ago
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Harrizon [31]

Step-by-step explanation:

Let's take cost of 1 hamburger as h and the cost of 1 hot dog as d.

Therefore, we can form the equations:

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h = 7 - 2d

By substituting this to the first equation, we get:

3(7 - 2d) + 2d = 13

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h = $3

Hence <u>1 hot dog costs $2</u> and <u>1 hamburger costs $3</u>

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3 years ago
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